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[해외논문] Temporal analysis of a landslide by means of a ground-based SAR Interferometer

IEEE transactions on geoscience and remote sensing : a publication of the IEEE Geoscience and Remote Sensing Society, v.41 no.4 pt.1, 2003년, pp.745 - 752  

Leva, D. (Inst. for the Protection & Security of the Citizen, Joint Res. Centre of the Eur. Comm., Ispra, Italy) ,  Nico, G. ,  Tarchi, D. ,  Fortuny-Guasch, J. ,  Sieber, A.J.

Abstract

A ground-based synthetic aperture radar (GB-SAR) interferometer is used to retrieve the velocity field of a landslide. High-resolution images are obtained by means of a time domain SAR processor. An in-depth analysis of the sequence of SAR interferograms enables the recognition of a slowly deforming upper scarp in the scene, and a debris flow that feeds the accumulation zone of the landslide, where a fast change in terrain morphology is observed. The estimated deformation map is in agreement with the available measurements obtained by means of Global Positioning System receivers. Results show that GB-SAR interferometry is a cost-effective solution for the monitoring of landslides. The proposed method is shown to be a valid complement to space- and airborne SAR and to the traditional geodetic instruments.

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